jack hanna stops by with some of his friends and if you know jack, that means cheetahs, alligators, leopards, a whole lot more. a menagerie of hell as far as i'm concerned. take a look. >> the tail, for example. you can touch the tail. the tail gets much bigger, this thick. up there, 40, 50 below zero. >> whoa. >> that was cool, wasn't it? >> yeah, that was very cool. >> sorry you don't have a hand there. the cameraman, please don't sue me.